Its pretty easy to from a tech perspective to tumble and swap coins or use a combination of both. Not only that but you can swap into different blockchains whic

Its pretty easy to from a tech perspective to tumble and swap coins or use a combination of both. Not only that but you can swap into different blockchains which have fully anonymous layers. So tracing a path is completely impossible. But there is one significant problem, tumbling and swapping 7.5 Billion is hard to do without creating huge market waves and that will be noticed. So you would spread it over 3-4 years and use a variety of swap/tumblers and it can be done. Eventually you have to cash it out and some off ramps might raise some flags.